中国物理B ›› 2024, Vol. 33 ›› Issue (11): 110701-110701.doi: 10.1088/1674-1056/ad7af8

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Gas encapsulation technology for large volume press

Minghao Du(杜明浩) and Duanwei He(贺端威)†   

  1. Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
  • 收稿日期:2024-05-13 修回日期:2024-07-31 接受日期:2024-09-14 出版日期:2024-11-15 发布日期:2024-11-15
  • 基金资助:
    This study was supported by the National Key R&D Program of China (Grant No. 2023YFA1406200).

Gas encapsulation technology for large volume press

Minghao Du(杜明浩) and Duanwei He(贺端威)†   

  1. Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
  • Received:2024-05-13 Revised:2024-07-31 Accepted:2024-09-14 Online:2024-11-15 Published:2024-11-15
  • Contact: Duanwei He E-mail:duanweihe@scu.edu.cn
  • Supported by:
    This study was supported by the National Key R&D Program of China (Grant No. 2023YFA1406200).

摘要: For samples in the gaseous state at room temperature and ambient pressure, mature technology has been developed to encapsulate them in a diamond anvil cell (DAC). However, the large volume press (LVP) can only treat samples with starting materials in solid or liquid form. We have achieved stable encapsulation and reaction treatment of carbon dioxide in a centimeter sized sample chamber for a long time (over 10 min) under conditions of temperature higher than 1200 ℃ and pressure over 5 GPa through the use of integrated low-temperature freezing and rapid compression sealing method for LVP cell assemblies. This technology can also be applied to the packaging of other gaseous or liquid samples, such as ammonia, sulfur dioxide, water, etc. in LVP devices.

关键词: large volume press, gas encapsulation, low-temperature

Abstract: For samples in the gaseous state at room temperature and ambient pressure, mature technology has been developed to encapsulate them in a diamond anvil cell (DAC). However, the large volume press (LVP) can only treat samples with starting materials in solid or liquid form. We have achieved stable encapsulation and reaction treatment of carbon dioxide in a centimeter sized sample chamber for a long time (over 10 min) under conditions of temperature higher than 1200 ℃ and pressure over 5 GPa through the use of integrated low-temperature freezing and rapid compression sealing method for LVP cell assemblies. This technology can also be applied to the packaging of other gaseous or liquid samples, such as ammonia, sulfur dioxide, water, etc. in LVP devices.

Key words: large volume press, gas encapsulation, low-temperature

中图分类号:  (High-pressure apparatus; shock tubes; diamond anvil cells)

  • 07.35.+k
82.40.Fp (Shock wave initiated reactions, high-pressure chemistry)